AliMed® PIR Alarm Systems are simple, safe and dependable motion-detection technology to help manage patient care and fall prevention. The PIR Alarm works just like automatic motion-detection lights. When the beam is interrupted, the alarm is sounded. The PIR beam is narrow and fan-shaped so that only the bedside area is monitored. The alarm won't go off when staff members enter the room. These systems eliminate the hazards associated with cords - tripping and accidental wire pulls are eliminated.